横向
1
Number with digits after a point
5
Exact correspondence on both sides
6
Comparison of two quantities
9
Math using letters for unknown values
10
Corner point of a polygon
纵向
2
Repeated addition
3
Rectangular array of numbers
4
Result of raising a number to an exponent
5
Collection of distinct elements
7
Line touching circle at one point
8
Steepness of a line